Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 311, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2020.113360
Keywords
Fullerenol; Density; Speed of sound; Surface tension; HSA; Excess thermodynamic functions
Funding
- Russian Foundation for Basic Research [18-08-00143, 18-33-20238, 19-016-00469]
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The article presents novel physicochemical data on C-60(OH)(24) aqueous solutions. Temperature and concentration dependencies of density (rho) and speed of sound (u) and surface tension (gamma) were obtained. Additionally, the study of human serum albumin (HSA) binding to C-60(OH)(24) fullerenol was conducted, and thermodynamic characteristics of C-60(OH)(24)-HSA binding were calculated. The obtained values of a binding constant demonstrate that the complexes of C-60(OH)(24) with HSA are stable and HSA can perform transport functions in the bloodstream. Finally, excess thermodynamic functions of C-60(OH)(24)-H2O binary system were calculated under the application of Virial Decomposition Asymmetric Model (VD-AS) and the boundaries of diffusion stability loss were determined. Aqueous solutions of C-60(OH)(20) are thermodynamically stable up to x(diff) = 6.0 . 10(-5). Further concentration increase leads to formation of third-order dusters with linear dimensions of thousands of nanometres and phase separation of the aqueous solution. (C) 2020 Elsevier B.V. All rights reserved.
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